Contact

We work hard to keep our customers happy and encourage you to let us know how we can serve you better. Thank you in advance for information about errors in the examples (we are just people), suggestions for improvements and/or your opinion. Our reply expect within one working day. If you are looking for a solution specific math problem is a good chance that we have it - try searching through keywords ie: rhombus area.

If you want to reward our work, please send us a voluntary contribution, enabling us to spend more time develop this site:

Contact Form